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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1756829Generated: October 28, 2026

2-Methyl-2-propenyl 5-bromo-3-(2-methyl-2-propenyl)-2-hydroxybenzoate → 5-Bromo-2,3-dihydro-2,2-dimethylbenzofuran-7-carboxylic acid

https://huagongshe.com/reaction/1756829

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Methyl-2-propenyl 5-bromo-3-(2-methyl-2-propenyl)-2-hydroxybenzoateHCID 15728737—
SolventFormic AcidHCID 284—
Product5-Bromo-2,3-dihydro-2,2-dimethylbenzofuran-7-carboxylic acidHCID 1483840120%

Reaction Steps

The title intermediate was prepared in 20% yield from 2-methyl-2-propenyl 5-bromo-3-(2-methyl-2-propenyl)-2-hydroxybenzoate upon heating at reflux with 90% formic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05442078
Source datasetuspto-grants-1995_08
ORD IDord-ccee77ef0eeb4e7aa5dde3c465440e4d
Source noteuspto-grants-1995_08